<template>
  <view class="u-time-axis-item">
    <slot name="content" />
    <view class="u-time-axis-node" :style="[nodeStyle]">
      <slot name="dot">
        <view class="u-dot">
        </view>
      </slot>
    </view>
    <view class="u-time-axis-left">
      <slot name="left"></slot>
    </view>
  </view>
</template>

<script>
/**
 * timeLineItem 时间轴Item
 * @description 时间轴组件一般用于物流信息展示，各种跟时间相关的记录等场景。(搭配u-time-line使用)
 * @tutorial https://www.uviewui.com/components/timeLine.html
 * @property {String} bg-color 左边节点的背景颜色，一般通过slot内容自定义背景颜色即可（默认#ffffff）
 * @property {String Number} node-top 节点左边图标绝对定位的top值，单位rpx
 * @example <u-time-line-item node-top="2">...</u-time-line-item>
 */
export default {
  name: 'b-time-line-item',
  props: {
    // 节点的背景颜色
    bgColor: {
      type: String,
      default: '#ffffff'
    },
    // 节点左边图标绝对定位的top值
    nodeTop: {
      type: [String, Number],
      default: ''
    }
  },
  data() {
    return {}
  },
  computed: {
    nodeStyle() {
      let style = {
        backgroundColor: this.bgColor
      }
      if (this.nodeTop != '') style.top = this.nodeTop + 'rpx'
      return style
    }
  }
}
</script>

<style lang="scss" scoped>
.u-time-axis-item {
  display: flex;
  flex-direction: column;
  width: 100%;
  position: relative;
  margin-bottom: 32rpx;
}

.u-time-axis-node {
  position: absolute;
  top: 12rpx;
  left: -40rpx;
  transform-origin: 0;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
  font-size: 24rpx;
}

.u-dot {
  height: 24rpx;
  width: 24rpx;
  border-radius: 50%;
  background: #b4dcfb;
  position: relative;
  &::before {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    content: '';
    width: 8rpx;
    height: 8rpx;
    border-radius: 50%;    
    background: #068cf4;
  }
}

.u-time-axis-left{
  position: absolute;
  left: -240rpx;
  text-align: right;
  width: 160rpx;
}
</style>
